I believe that much of the trial cost is included with routine care under Australia's Universal Healthcare, so it doesn't cost them a lot extra to run the trial.
Who knows, they may even save money if those patients turn out to need less care!
"In March 2016, we received approval from the Ethics Committee in Australia to extend the ongoing Phase 2a clinical trial, which had been requested by patients and their caregivers.
I seem to remember finding a list of exactly how the money was being allocated. From my memory, much of it went to things like training for caregivers etc. Maybe someone actually long or short this company wants to see if they can locate the link and provide it?